What is SpellType?

SpellType is a private AI autocomplete application for Mac that suggests the next few words while you write in Gmail, Slack, Docs, Messages, and more. It runs locally on your device, requiring no screen recording, prompt writing, or model selection. The app is designed to be lightweight on battery and works offline, keeping your writing private.

How to use SpellType?

1. Download and install SpellType on your Mac (requires macOS 14 Sonoma or later on Apple silicon). 2. Grant the Mac Accessibility permission once during setup. 3. Start writing in supported apps like Gmail, Slack, Docs, or Messages. 4. Press Tab to accept a useful completion, or keep typing to ignore the suggestion.

Core features of SpellType

Private, on-device autocomplete (no cloud processing)
Works across Gmail, Slack, Docs, Messages, WhatsApp, ChatGPT, Claude, Outlook, and more
No screen recording, no prompt writing, no model menus
Tab-to-accept completions with minimal interruption
Offline-capable with low battery impact
One-time permission setup for all supported apps